1. In short, Wear the same amount of clothing when stand on the Weight Stand.(empty pockets).2. Make sure the PET scan is timely.(+/- of 15 min.)of the resting period after injection.3. Relax during the scan period, avoid movement.4. follow instructions from the day before till after the Scan.(ie: NPO, diet, restrain from activity(ie: moving heavy object and exercise)